diff --git a/.github/workflows/test-libmaxminddb.yml b/.github/workflows/test-libmaxminddb.yml
index eefa7f2..7c3ae89 100644
--- a/.github/workflows/test-libmaxminddb.yml
+++ b/.github/workflows/test-libmaxminddb.yml
@@ -13,43 +13,41 @@ jobs:
 
     strategy:
       matrix:
+        env: [3.9, "3.10", 3.11, 3.12, 3.13]
         # We don't test on Windows currently due to issues
         # build libmaxminddb there.
-        platform: [macos-latest, ubuntu-latest]
-        python-version: [3.9, "3.10", 3.11, 3.12, 3.13]
+        os: [ubuntu-latest, ubuntu-24.04-arm, macos-latest]
 
-    name: Python ${{ matrix.python-version }} on ${{ matrix.platform }}
-    runs-on: ${{ matrix.platform }}
+    name: Python ${{ matrix.env }} on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
     env:
       MAXMINDDB_REQUIRE_EXTENSION: 1
       MAXMINDDB_USE_SYSTEM_LIBMAXMINDDB: 1
       MM_FORCE_EXT_TESTS: 1
 
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
+      - uses: actions/checkout@v4
         with:
           submodules: true
           persist-credentials: false
 
-      - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v5
-        with:
-          python-version: ${{ matrix.python-version }}
+      - name: Install the latest version of uv
+        uses: astral-sh/setup-uv@v3
 
-      - name: Install dependencies
-        run: |
-              python -m pip install --upgrade pip
-              pip install setuptools tox tox-gh-actions uv wheel
+      - name: Install tox
+        run: uv tool install --python-preference only-managed --python 3.13 tox --with tox-uv --with tox-gh
 
+      - name: Install Python
+        if: matrix.env != '3.13'
+        run: uv python install --python-preference only-managed ${{ matrix.env }}
 
       - name: Install libmaxminddb
         run: sudo apt install libmaxminddb-dev
-        if: matrix.platform == 'ubuntu-latest'
+        if: matrix.os == 'ubuntu-latest' || matrix.os == 'ubuntu-24.04-arm'
 
       - name: Install libmaxminddb
         run: brew install libmaxminddb
-        if: matrix.platform == 'macos-latest'
+        if: matrix.os == 'macos-latest'
 
       - name: "Work around macos arm64 homebrew directory changes"
         if: runner.os == 'macOS' && runner.arch == 'ARM64'
@@ -62,5 +60,12 @@ jobs:
         env:
           CFLAGS: "${{ env.CFLAGS }} -Werror -Wall -Wextra"
 
-      - name: Test with tox (system libmaxminddb)
-        run: tox
+      - name: Setup test suite
+        run: tox run -vv --notest --skip-missing-interpreters false
+        env:
+          TOX_GH_MAJOR_MINOR: ${{ matrix.env }}
+
+      - name: Run test suite
+        run: tox run --skip-pkg-install
+        env:
+          TOX_GH_MAJOR_MINOR: ${{ matrix.env }}
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 4606f48..9dd77be 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -9,35 +9,33 @@ on:
 permissions: {}
 
 jobs:
-  build:
-
+  test:
+    name: test with ${{ matrix.env }} on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
     strategy:
+      fail-fast: false
       matrix:
-        platform: [macos-latest, ubuntu-24.04-arm, ubuntu-latest, windows-latest]
-        python-version: [3.9, "3.10", 3.11, 3.12, 3.13]
-
-    name: Python ${{ matrix.python-version }} on ${{ matrix.platform }}
-    runs-on: ${{ matrix.platform }}
-
+        env: [3.9, "3.10", 3.11, 3.12, 3.13]
+        os: [ubuntu-latest, ubuntu-24.04-arm, macos-latest, windows-latest]
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
+      - uses: actions/checkout@v4
         with:
           submodules: true
           persist-credentials: false
-
-      - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v5
-        with:
-          python-version: ${{ matrix.python-version }}
-
-      - name: Install dependencies
-        run: |
-              python -m pip install --upgrade pip
-              pip install tox tox-gh-actions
-
-      - name: Test with tox (vendored libmaxminddb)
-        run: tox
+      - name: Install the latest version of uv
+        uses: astral-sh/setup-uv@v3
+      - name: Install tox
+        run: uv tool install --python-preference only-managed --python 3.13 tox --with tox-uv --with tox-gh
+      - name: Install Python
+        if: matrix.env != '3.13'
+        run: uv python install --python-preference only-managed ${{ matrix.env }}
+      - name: Setup test suite
+        run: tox run -vv --notest --skip-missing-interpreters false
+        env:
+          TOX_GH_MAJOR_MINOR: ${{ matrix.env }}
+      - name: Run test suite
+        run: tox run --skip-pkg-install
         env:
           MAXMINDDB_REQUIRE_EXTENSION: 1
           MM_FORCE_EXT_TESTS: 1
+          TOX_GH_MAJOR_MINOR: ${{ matrix.env }}
diff --git a/pyproject.toml b/pyproject.toml
index 1c9f3e6..020de9c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -36,6 +36,7 @@ dev = [
 ]
 lint = [
     "black>=25.1.0",
+    "flake8>=7.2.0",
     "mypy>=1.15.0",
     "pylint>=3.3.6",
     "ruff>=0.11.6",
@@ -49,8 +50,12 @@ requires = [
 ]
 build-backend = "setuptools.build_meta"
 
+[tool.setuptools]
+include-package-data = true
+packages = ["maxminddb"]
+
 [tool.setuptools.package-data]
-maxminddb = ["py.typed"]
+maxminddb = ["extension.pyi", "py.typed"]
 
 [tool.black]
 # src is showing up in our GitHub linting builds. It seems to
@@ -82,3 +87,43 @@ ignore = [
 
 [tool.ruff.lint.per-file-ignores]
 "tests/*" = ["ANN201", "D"]
+
+[tool.tox]
+env_list = [
+    "3.9",
+    "3.10",
+    "3.11",
+    "3.12",
+    "3.13",
+    "lint",
+]
+skip_missing_interpreters = false
+
+[tool.tox.env_run_base]
+dependency_groups = [
+  "dev",
+]
+commands = [
+    ["pytest", "tests"],
+]
+
+[tool.tox.env.lint]
+description = "Code linting"
+python = "3.13"
+dependency_groups = [
+    "dev",
+    "lint",
+]
+commands = [
+    ["black", "--check", "--diff", "."],
+    ["flake8", "maxminddb"],
+    ["mypy", "maxminddb", "tests"],
+    ["pylint", "maxminddb"],
+]
+
+[tool.tox.gh.python]
+"3.13" = ["3.13", "lint"]
+"3.12" = ["3.12"]
+"3.11" = ["3.11"]
+"3.10" = ["3.10"]
+"3.9" = ["3.9"]
diff --git a/setup.cfg b/setup.cfg
index 75a816e..af494c4 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -2,46 +2,3 @@
 extend-ignore = E203
 # black uses 88 : ¯\_(ツ)_/¯
 max-line-length = 88
-
-[options]
-package_dir =
-    maxminddb = maxminddb
-packages = maxminddb
-install_requires =
-include_package_data = True
-python_requires = >=3.9
-
-[options.package_data]
-maxminddb = extension.pyi; py.typed
-
-[tox:tox]
-envlist = {py39,py310,py311,py312,py313}-test,py313-{black,lint,flake8,mypy}
-
-[gh-actions]
-python =
-    3.9: py39
-    3.10: py310
-    3.11: py311
-    3.12: py312
-    3.13: py313,black,lint,flake8,mypy
-
-[testenv:{py39,py310,py311,py312,py313}-test]
-deps = pytest
-commands = pytest tests
-passenv = *
-
-[testenv:py313-black]
-deps = black
-commands = black --check --diff .
-
-[testenv:py313-lint]
-deps = pylint
-commands = pylint maxminddb
-
-[testenv:py313-flake8]
-deps = flake8
-commands = flake8 maxminddb
-
-[testenv:py313-mypy]
-deps = mypy
-commands = mypy maxminddb tests